2026438009 has 2 divisors, whose sum is σ = 2026438010. Its totient is φ = 2026438008.

The previous prime is 2026437983. The next prime is 2026438019. The reversal of 2026438009 is 9008346202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1823290000 + 203148009 = 42700^2 + 14253^2 .

It is a cyclic number.

It is not a de Polignac number, because 2026438009 - 2²⁹ = 1489567097 is a prime.

It is not a weakly prime, because it can be changed into another prime (2026438019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1013219004 + 1013219005.

It is an arithmetic number, because the mean of its divisors is an integer number (1013219005).

Almost surely, 2^2026438009 is an apocalyptic number.

It is an amenable number.

2026438009 is a deficient number, since it is larger than the sum of its proper divisors (1).

2026438009 is an equidigital number, since it uses as much as digits as its factorization.

2026438009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 2026438009 is about 45015.9750422003. The cubic root of 2026438009 is about 1265.4483996269.

The spelling of 2026438009 in words is "two billion, twenty-six million, four hundred thirty-eight thousand, nine".